add test case for repr(table)

test/test_persistence.py

@@ -184,6 +184,9 @@ class TableTestCase(unittest.TestCase):
         assert self.tbl.delete() is True, 'should return non zero'
         assert len(self.tbl) == 0, len(self.tbl)
 
+    def test_repr(self):
+        assert repr(self.tbl) == '<Table(weather)>', 'the representation should be <Table(weather)>'
+
     def test_delete_nonexist_entry(self):
         assert self.tbl.delete(place='Berlin') is False, 'entry not exist, should fail to delete'